<?php

namespace app\job\transfer\schedule;

use app\model\campus_person_role\CampusPersonRole;
use app\model\customer_resources\CustomerResources;
use app\model\resource_assignment\ResourceAssignment;
use app\model\personnel\Personnel;
use core\base\BaseScheduleJob;
use think\facade\Db;
use think\facade\Log;

/**
 * 自动分配资源
 */
class ResourceAutoAllocation extends BaseScheduleJob
{
    /**
     * 任务名称
     * @var string
     */
    protected $jobName = 'resource_allocation';
    
    /**
     * 锁定时间（5分钟）
     * @var int
     */
    protected $lockTimeout = 300;
    
    /**
     * 执行具体任务
     * @return array
     */
    protected function executeJob()
    {
        // 获取待分配的资源
        $resources = $this->getResource();
        if (empty($resources)) {
            Log::write('没有可分配的资源');
            return $this->getSuccessResult([
                'allocated' => 0,
                'message' => '没有可分配的资源'
            ]);
        }
        
        // 获取销售人员
        $salesmen = $this->getSalesman();
        if (empty($salesmen)) {
            Log::write('没有可用的销售人员');
            return $this->getSuccessResult([
                'allocated' => 0,
                'message' => '没有可用的销售人员'
            ]);
        }
        
        // 分配资源
        $result = $this->allocateResource($resources, $salesmen);
        
        return $this->getSuccessResult([
            'allocated' => $result['allocated'] ?? 0,
            'updated' => $result['updated'] ?? 0,
            'created' => $result['created'] ?? 0,
            'total_resources' => count($resources),
            'total_salesmen' => count($salesmen)
        ]);
    }

    /**
     * 获取销售人员（按角色ID为6或7的人员，支持校区优先和主管兜底）
     * @param int|null $campus_id 校区ID，用于优先分配
     * @return array 销售人员列表
     */
    public function getSalesman(?int $campus_id = null)
    {
        Log::write('获取销售人员' . ($campus_id ? '，优先校区ID：' . $campus_id : ''));

        // 获取所有角色ID为6或7的人员
        $all_salesmen = CampusPersonRole::where('role_id', 'in', [6, 7])
            ->where('deleted_at', 0)
            ->field('person_id, role_id, campus_id')
            ->select()
            ->toArray();

        if (empty($all_salesmen)) {
            Log::write('未找到销售人员');
            return [];
        }

        // 获取人员详细信息
        $person_ids = array_column($all_salesmen, 'person_id');
        $personnel_info = Personnel::whereIn('id', $person_ids)
            ->field('id, name, status')
            ->where('status', 1) // 只获取在职人员
            ->select()
            ->toArray();

        $personnel_map = array_column($personnel_info, null, 'id');

        // 过滤在职人员并整理数据
        $valid_salesmen = [];
        foreach ($all_salesmen as $salesman) {
            if (isset($personnel_map[$salesman['person_id']])) {
                $salesman['name'] = $personnel_map[$salesman['person_id']]['name'];
                $valid_salesmen[] = $salesman;
            }
        }

        if (empty($valid_salesmen)) {
            Log::write('未找到在职销售人员');
            return [];
        }

        // 获取每个销售人员当前拥有的资源数量（使用新表）
        foreach ($valid_salesmen as &$salesman) {
            $resourceCount = ResourceAssignment::where('assignee_type', 'user')
                ->where('assignee_id', $salesman['person_id'])
                ->count();
            $salesman['resource_count'] = $resourceCount;
        }

        // 如果指定了校区，优先分配给该校区的销售人员
        if ($campus_id) {
            $campus_salesmen = array_filter($valid_salesmen, function($salesman) use ($campus_id) {
                return $salesman['campus_id'] == $campus_id;
            });

            if (!empty($campus_salesmen)) {
                // 校区内销售人员按资源数量排序
                array_multisort(array_column($campus_salesmen, 'resource_count'), SORT_ASC, $campus_salesmen);

                // 其他销售人员（主管兜底）按资源数量排序
                $other_salesmen = array_filter($valid_salesmen, function($salesman) use ($campus_id) {
                    return $salesman['campus_id'] != $campus_id;
                });

                if (!empty($other_salesmen)) {
                    array_multisort(array_column($other_salesmen, 'resource_count'), SORT_ASC, $other_salesmen);

                    // 主管优先（角色ID=7）
                    usort($other_salesmen, function($a, $b) {
                        if ($a['role_id'] == 7 && $b['role_id'] != 7) return -1;
                        if ($a['role_id'] != 7 && $b['role_id'] == 7) return 1;
                        return $a['resource_count'] - $b['resource_count'];
                    });
                }

                Log::write('找到' . count($campus_salesmen) . '个校区销售人员，' . count($other_salesmen) . '个其他销售人员');

                // 返回校区优先，主管兜底的列表
                return array_merge($campus_salesmen, $other_salesmen);
            }
        }

        // 没有指定校区或没有校区销售人员，按主管优先排序
        usort($valid_salesmen, function($a, $b) {
            // 主管优先（角色ID=7）
            if ($a['role_id'] == 7 && $b['role_id'] != 7) return -1;
            if ($a['role_id'] != 7 && $b['role_id'] == 7) return 1;
            // 相同角色按资源数量排序
            return $a['resource_count'] - $b['resource_count'];
        });

        Log::write('找到' . count($valid_salesmen) . '个销售人员，主管优先排序');
        return $valid_salesmen;
    }

    /**
     * 获取待分配的资源（使用新表结构）
     * @return array 待分配资源列表
     */
    public function getResource()
    {
        Log::write('获取待分配资源');

        // 方法1：获取新表中没有分配记录的资源
        $customer_resources = CustomerResources::alias('cr')
            ->leftJoin('school_resource_assignment ra', 'cr.id = ra.resource_id')
            ->whereNull('ra.resource_id')
            ->field('cr.id as resource_id, cr.campus_id, cr.name, cr.phone_number')
            ->select()
            ->toArray();

        if (empty($customer_resources)) {
            Log::write('未找到待分配资源');
            return [];
        }

        Log::write('找到' . count($customer_resources) . '个待分配资源');
        return $customer_resources;
    }

    /**
     * 按照销售人员的资源拥有情况分配资源（使用新表结构）
     * @param array $resources 待分配的资源列表
     * @param array $salesmen 销售人员列表
     */
    public function allocateResource($resources, $salesmen)
    {
        Log::write('按照销售人员的资源拥有情况分配资源');

        if (empty($resources) || empty($salesmen)) {
            Log::write('没有资源或销售人员，无法分配');
            return [
                'allocated' => 0,
                'updated' => 0,
                'created' => 0
            ];
        }

        // 记录分配结果
        $allocations = [];
        $createdCount = 0;

        // 开始分配
        foreach ($resources as $resource) {
            // 重新获取销售人员的资源数量排序，确保每次分配都是给最少资源的人
            $currentSalesmen = $this->refreshSalesmenResourceCount($salesmen, $resource['campus_id']);

            if (empty($currentSalesmen)) {
                Log::write('没有可用的销售人员');
                break;
            }

            // 选择最优销售人员
            $targetSalesman = $currentSalesmen[0];

            // 使用新表创建分配记录
            try {
                Db::startTrans();

                // 检查是否已存在分配记录
                $existingAssignment = ResourceAssignment::where('resource_id', $resource['resource_id'])
                    ->where('assignee_type', 'user')
                    ->where('assignee_id', $targetSalesman['person_id'])
                    ->find();

                if ($existingAssignment) {
                    Log::write('资源ID ' . $resource['resource_id'] . ' 已分配给销售人员 ' . $targetSalesman['name'] . '，跳过');
                    Db::commit();
                    continue;
                }

                // 创建新的分配记录
                $assignmentData = [
                    'resource_id' => $resource['resource_id'],
                    'assignee_type' => 'user', // 精确分配到人
                    'assignee_id' => $targetSalesman['person_id'],
                    'is_primary' => 0, // 非主责分配
                    'assigned_by' => 0, // 系统自动分配
                    'assigned_at' => date('Y-m-d H:i:s'),
                    'campus_id' => $resource['campus_id'], // 使用资源的校区
                    'assigned_source' => 'auto_allocation' // 标记为自动分配
                ];

                $assignment = ResourceAssignment::create($assignmentData);

                if ($assignment) {
                    $createdCount++;
                    Log::write('成功分配资源ID：' . $resource['resource_id'] . ' 给销售人员：' . $targetSalesman['name'] . ' (ID:' . $targetSalesman['person_id'] . ')');
                }

                Db::commit();

            } catch (\Exception $e) {
                Db::rollback();
                Log::write('资源分配失败，资源ID：' . $resource['resource_id'] . '，错误：' . $e->getMessage());
            }
        }

        Log::write('成功分配 ' . $createdCount . ' 个资源');

        return [
            'allocated' => $createdCount,
            'updated' => 0,
            'created' => $createdCount
        ];
    }
    
    /**
     * 刷新销售人员的资源数量并重新排序（使用新表结构）
     * @param array $salesmen 销售人员列表
     * @param int|null $campus_id 资源所属校区ID
     * @return array 更新后的销售人员列表
     */
    private function refreshSalesmenResourceCount($salesmen, ?int $campus_id = null)
    {
        if (empty($salesmen)) {
            return [];
        }

        foreach ($salesmen as &$salesman) {
            // 使用新表查询资源数量
            $resourceCount = ResourceAssignment::where('assignee_type', 'user')
                ->where('assignee_id', $salesman['person_id'])
                ->count();
            $salesman['resource_count'] = $resourceCount;
        }

        // 如果指定了校区，按校区优先和资源数量重新排序
        if ($campus_id) {
            $campus_salesmen = array_filter($salesmen, function($salesman) use ($campus_id) {
                return $salesman['campus_id'] == $campus_id;
            });

            if (!empty($campus_salesmen)) {
                // 校区内销售人员按资源数量排序
                array_multisort(array_column($campus_salesmen, 'resource_count'), SORT_ASC, $campus_salesmen);

                // 其他销售人员按主管优先和资源数量排序
                $other_salesmen = array_filter($salesmen, function($salesman) use ($campus_id) {
                    return $salesman['campus_id'] != $campus_id;
                });

                if (!empty($other_salesmen)) {
                    usort($other_salesmen, function($a, $b) {
                        // 主管优先（角色ID=7）
                        if ($a['role_id'] == 7 && $b['role_id'] != 7) return -1;
                        if ($a['role_id'] != 7 && $b['role_id'] == 7) return 1;
                        // 相同角色按资源数量排序
                        return $a['resource_count'] - $b['resource_count'];
                    });
                }

                // 返回校区优先，主管兜底的列表
                return array_merge($campus_salesmen, $other_salesmen);
            }
        }

        // 没有校区或没有校区销售人员，按主管优先和资源数量排序
        usort($salesmen, function($a, $b) {
            // 主管优先（角色ID=7）
            if ($a['role_id'] == 7 && $b['role_id'] != 7) return -1;
            if ($a['role_id'] != 7 && $b['role_id'] == 7) return 1;
            // 相同角色按资源数量排序
            return $a['resource_count'] - $b['resource_count'];
        });

        return $salesmen;
    }
}